28022798 has 8 divisors (see below), whose sum is σ = 42442608. Its totient is φ = 13875264.

The previous prime is 28022789. The next prime is 28022831. The reversal of 28022798 is 89722082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67811 + ... + 68222.

It is an arithmetic number, because the mean of its divisors is an integer number (5305326).

Almost surely, 2^28022798 is an apocalyptic number.

28022798 is a deficient number, since it is larger than the sum of its proper divisors (14419810).

28022798 is a wasteful number, since it uses less digits than its factorization.

28022798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136138.

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 28022798 is about 5293.6563923247. The cubic root of 28022798 is about 303.7412893007.

The spelling of 28022798 in words is "twenty-eight million, twenty-two thousand, seven hundred ninety-eight".